If the Space Shuttle were given a much larger fuel tank, it could achieve speeds of about 90 percent of the speed of light
Indicate whether the statement is true or false
FALSE
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A hollow circular post ABC (see figure) supports a load P1 5 16 kN actat the top. A second load P2 is uniformly distributed around the cap plate at B. The diameters and thicknesses of the upper and lower parts of the post are dAB 5 30 mm, tAB 5 12 mm, dBC 5 60 mm, and tBC 5 9 mm, respectively. The lower part of the post must have the same compressive stress as the upper part. The required magnitude of the load P2 is approximately:
(A) 18 kN
(B) 22 kN
(C) 28 kN
(D) 46 kN
A cube-shaped box is sitting on the floor. The pressure the box exerts on the floor is 235 Pa. If the density of the box is 21.0 kg/m3, what is the length of each side of the box?
a. 0.00910 m b. 1.14 m c. 110 m d. 11.2 m
A magnifying glass has a focal length of 7.0 cm. What is the angular magnification if the image is viewed by a person having a relaxed eye with the near point of 25 cm?
A) 1.6 B) 2.6 C) 3.6 D) 4.6
The current in two identical light bulbs connected in series is 0.25 A. The voltage across both bulbs is 110 V. The resistance of a single light bulb is
A) 22 ohms. B) 44 ohms. C) 220 ohms. D) 440 ohms. E) none of the above